path: root/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
diff options
authorJakub Kicinski <jakub.kicinski@netronome.com>2018-02-07 20:55:25 -0800
committerDavid S. Miller <davem@davemloft.net>2018-02-08 10:01:27 -0500
commit0d592e52fbbda26155b686dd93878cf774a3ab0e (patch)
treebd5d0a7658d8bf238a2fabe13f1b44049f810e1c /drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
parentd692403e5cf8008f31f5664a6f3ce3e65d54f458 (diff)
nfp: limit the number of TSO segments
Most FWs limit the number of TSO segments a frame can produce to 64. This is for fairness and efficiency (of FW datapath) reasons. If a frame with larger number of segments is submitted the FW will drop it. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h')
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
index eeecef2caac6..4499a7333078 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
@@ -59,9 +59,12 @@
#define NFP_NET_RX_OFFSET 32
- * Maximum header size supported for LSO frames
+ * LSO parameters
+ * %NFP_NET_LSO_MAX_HDR_SZ: Maximum header size supported for LSO frames
+ * %NFP_NET_LSO_MAX_SEGS: Maximum number of segments LSO frame can produce
#define NFP_NET_LSO_MAX_HDR_SZ 255
+#define NFP_NET_LSO_MAX_SEGS 64
* Prepend field types

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